Merging DNSCrypt 2.1.15 testing branch commits into master branch

Updating master branch to DNScrypt 2.1.15 proxy. Also enabled DNS caching to improve latency.

Author: xtr0py

.github/workflows/docker-publish.yml

@@ -26,7 +26,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Setup default version
-        run: echo "DNSCRYPT_PROXY_VERSION=2.1.14" >> $GITHUB_ENV
+        run: echo "DNSCRYPT_PROXY_VERSION=2.1.15" >> $GITHUB_ENV
         if: ${{ env.DNSCRYPT_PROXY_VERSION == '' }}
 
       - name: Setup Docker buildx

Dockerfile

@@ -1,5 +1,5 @@
 FROM golang:alpine as build
-ENV RELEASE_TAG 2.1.14
+ENV RELEASE_TAG 2.1.15
 RUN apk --no-cache add git && \
     git clone https://github.com/jedisct1/dnscrypt-proxy /go/src/github.com/jedisct1/ && \
     cd /go/src/github.com/jedisct1/dnscrypt-proxy && \

README.md

@@ -5,7 +5,8 @@
 This is a Docker image containing [DNSCrypt Proxy 2.x](https://github.com/jedisct1/dnscrypt-proxy). You can use this to set up a DNS proxy on your local network which resolves queries using DNSCrypt or DNS-over-HTTPS (DoH) rather than sending plaintext DNS queries over the Internet.
 
 This image comes with a configuration which:
-- [x] Runs DNScrypt-proxy 2.1.14 
+- [x] Leverages caching for lower latency
+- [x] Runs DNScrypt-proxy 2.1.15 
 - [x] Queries via DNS-over-HTTPS (DoH) and DNSCrypt
 - [x] Posits DNSSEC enabled, no logging, no filtering servers
 - [x] Listens on all interfaces

config/dnscrypt-proxy.toml

@@ -202,27 +202,32 @@ block_ipv6 = true
 
 ## Enable a DNS cache to reduce latency and outgoing traffic
 
-cache = false
+cache = true
 
 
 ## Cache size
 
-cache_size = 4096
+cache_size = 65536
 
 
 ## Minimum TTL for cached entries
 
-cache_min_ttl = 2400
+cache_min_ttl = 300
 
 
 ## Maximum TTL for cached entries
 
-cache_max_ttl = 86400
+cache_max_ttl = 3600
 
 
-## TTL for negatively cached entries
+## Minimum TTL for negatively cached entries
 
-cache_neg_ttl = 60
+cache_neg_min_ttl = 5
+
+
+## Maximum TTL for negatively cached entries
+
+cache_neg_max_ttl = 120